GOST · Russia / CIS · 3 designations

3И2

4KH3VMF is a grade designated under GOST. Its recorded composition includes C 0.4–0.48%, Si 0.6–0.9%, V 0.6–0.9%, Cr 2.8–3.5% and W 0.6–1%. We list 2 designations recorded for this grade, in the standards GOST. Recorded mechanical properties include Rm 1720 N/mm², Re 1520 N/mm², HB 241 and KCU 560 kJ/m². Recorded transformation points: Ac1 800 °C, Ac3 850 °C, Ar1 730 °C and Ar3 760 °C.

Designations 3

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If you came for one of these

The most-used names for this grade.

GOST4KH3VMFThis grade’s own name

Also known as

3 designations · 1 standards · nothing hidden

This grade’s own namerecorded in our sources as this grade’s own designation under that standard.

Indicativetaken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.

Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

GOSTRussia / CIS · 3

Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.

Chemical composition

11 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 92.4 %Cr — 3.2 %W — 0.8 %Si — 0.8 %Traces & impurities · 2.9 %

Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.

Element	% by weight
	0.4–0.48
	0.6–0.9
	0.3–0.6
	≤ 0.03
	≤ 0.03
	2.8–3.5
	0.4–0.6
	≤ 0.4
	0.6–0.9
	0.6–1
	≤ 0.3

0.01 %0.1 %1 %10 %100 %

The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other.

Element	As publishedsource text, verbatim	Min% by weight	Max% by weight	Bound
C	0.4 - 0.48	0.400	0.480	Range
Si	0.6 - 0.9	0.600	0.900	Range
P	max 0.03	—	0.030	Max
S	max 0.03	—	0.030	Max
V	0.6 - 0.9	0.600	0.900	Range
Cr	2.8 - 3.5	2.800	3.500	Range
Mn	0.3 - 0.6	0.300	0.600	Range
Ni	max 0.4	—	0.400	Max
Cu	max 0.3	—	0.300	Max
Mo	0.4 - 0.6	0.400	0.600	Range
W	0.6 - 1	0.600	1.000	Range

The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred.

Predicted transformation temperatures

This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here.

Physical & mechanical properties

Transformation point Ac1800°CExact

Transformation point Ac3850°CExact · Ac3(Acm)

Transformation point Ar3760°CExact · Ar3(Arcm)

Transformation point Ar1730°CExact

An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material.

Properties by condition

2 conditions · 4 values

By dimensionQuenching 1040 - 1060°C, oil, Drawing 560 - 580°C,Drawing 530 - 570°Csource splav

Dimensionmm	RmN/mm²	ReN/mm²	KCUkJ/m²
10	1720	1520	560

By delivery stateno delivery state statedsource splav

Delivery state	HB
4KH3VMF ( 4Х3ВМФ ) (annealing) , GOST 5950-2000	241

Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ.

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